Charles Elliott Sigal - May 8, 2025 Form 4 Insider Report for ALNYLAM PHARMACEUTICALS, INC. (ALNY)

Role
Director
Signature
By: Brett Budzinski, Attorney-in-Fact For: Charles Elliott Sigal
Stock symbol
ALNY
Transactions as of
May 8, 2025
Transactions value $
$0
Form type
4
Date filed
5/12/2025, 04:04 PM
Previous filing
Jun 3, 2024
Next filing
Jun 2, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Sigal Charles Elliott Director 675 WEST KENDALL STREET, HENRI A. TERMEER SQUARE, CAMBRIDGE By: Brett Budzinski, Attorney-in-Fact For: Charles Elliott Sigal 2025-05-12 0001661908

Transactions Table

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction ALNY Stock Option (right to buy) Award $0 +1.56K $0.00 1.56K May 8, 2025 Common Stock 1.56K $258.35 Direct F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 These shares are represented by restricted stock units (RSUs) granted under the Amended and Restated 2018 Stock Incentive Plan. Each RSU represents a contingent right to receive one share of common stock. The RSUs will vest in full upon the earlier of the first anniversary of the grant date and the date of any earlier retirement or resignation of the Reporting Person, provided such date of retirement or resignation occurs no more than 90 days prior to the first anniversary of the grant date.
F2 Shares held by Sigal Family Investments, LLC, of which the reporting person is Managing Member.
F3 The stock option vests in full upon the earlier of the first anniversary of the grant date and the date of any earlier retirement or resignation of the Reporting Person, provided such date of retirement or resignation occurs no more than 90 days prior to the first anniversary of the grant date.